AMPHASTAR PHARMACEUTICALS IN's ticker is AMPH and the CUSIP is 03209R103. A total of 204 filers reported holding AMPHASTAR PHARMACEUTICALS IN in Q1 2022. The put-call ratio across all filers is 16.41 and the average weighting 0.1%.
Quarter-by-quarter ownership
| Value | Shares | Weighting | ||||
|---|---|---|---|---|---|---|
| Q3 2023 | $1,221,311 | +243.5% | 26,556 | +329.3% | 0.00% | +100.0% |
| Q2 2023 | $355,506 | -34.3% | 6,186 | -57.1% | 0.00% | 0.0% |
| Q1 2023 | $540,840 | -24.9% | 14,422 | -43.7% | 0.00% | -50.0% |
| Q3 2022 | $720,000 | -66.0% | 25,632 | -57.7% | 0.00% | -60.0% |
| Q2 2022 | $2,115,000 | +46.3% | 60,625 | +51.2% | 0.01% | +66.7% |
| Q1 2022 | $1,446,000 | +30.4% | 40,107 | -27.3% | 0.00% | 0.0% |
| Q4 2020 | $1,109,000 | -34.0% | 55,158 | -38.5% | 0.00% | -40.0% |
| Q3 2020 | $1,681,000 | +6.8% | 89,658 | +27.9% | 0.01% | 0.0% |
| Q2 2020 | $1,574,000 | +43.2% | 70,094 | -5.3% | 0.01% | +25.0% |
| Q1 2020 | $1,099,000 | -30.4% | 74,049 | -9.5% | 0.00% | -20.0% |
| Q4 2019 | $1,578,000 | -5.8% | 81,823 | -3.1% | 0.01% | +25.0% |
| Q3 2019 | $1,675,000 | -6.1% | 84,483 | 0.0% | 0.00% | -33.3% |
| Q2 2019 | $1,783,000 | +40.1% | 84,483 | +35.6% | 0.01% | +50.0% |
| Q1 2019 | $1,273,000 | -35.4% | 62,295 | -38.5% | 0.00% | -42.9% |
| Q4 2018 | $1,972,000 | +50.9% | 101,341 | +49.2% | 0.01% | +40.0% |
| Q3 2018 | $1,307,000 | +26.0% | 67,934 | 0.0% | 0.01% | +25.0% |
| Q2 2018 | $1,037,000 | -14.5% | 67,934 | +4.9% | 0.00% | -20.0% |
| Q1 2018 | $1,213,000 | -6.1% | 64,741 | -3.6% | 0.01% | +25.0% |
| Q4 2017 | $1,292,000 | +0.1% | 67,175 | -7.0% | 0.00% | -20.0% |
| Q3 2017 | $1,291,000 | +0.1% | 72,251 | 0.0% | 0.01% | 0.0% |
| Q2 2017 | $1,290,000 | -13.7% | 72,251 | -29.9% | 0.01% | -28.6% |
| Q1 2017 | $1,495,000 | +14850.0% | 103,074 | +20071.0% | 0.01% | – |
| Q4 2016 | $10,000 | +25.0% | 511 | +27.8% | 0.00% | – |
| Q3 2016 | $8,000 | – | 400 | – | 0.00% | – |
Download | ||||||
Other shareholders
| Name | Shares | Value | Weighting ↓ |
|---|---|---|---|
| LAM GROUP, INC. | 130,250 | $4,884,375 | 4.79% |
| SHAKER INVESTMENTS LLC/OH | 82,253 | $3,084,488 | 1.72% |
| Mesirow Institutional Investment Management, Inc. | 325,669 | $12,212,588 | 1.33% |
| Portolan Capital Management | 340,593 | $12,772,238 | 1.22% |
| OBERWEIS ASSET MANAGEMENT INC/ | 178,200 | $6,682,500 | 1.04% |
| Granite Investment Partners, LLC | 536,821 | $20,130,788 | 0.84% |
| Capital Impact Advisors, LLC | 15,304 | $573,900 | 0.70% |
| Hillsdale Investment Management Inc. | 155,038 | $5,813,926 | 0.50% |
| GLOBEFLEX CAPITAL L P | 89,192 | $3,344,700 | 0.41% |
| Jackson Creek Investment Advisors LLC | 25,877 | $970 | 0.41% |